我们知道，从WLC Release 7.0开始，WLC5508就支持500个AP了，但是某情况下，可能会出现我们安装了287个license（超过250 APs），但是实际上显示我的WLC最多支持250个AP。
(Cisco Controller) >show ap maximum Max APs Supported................................ 250 <<<<<<< Max AP Groups Supported.......................... 500 Max AP join limit................................ 250
(Cisco Controller) >show license capacity Licensed Feature Max Count Current Count Remaining Count ----------------------------------------------------------------------- AP Count 250 200 50
(Cisco Controller) >show license in-use License Store: Primary License Storage StoreIndex: 0 Feature: base-ap-count Version: 1.0 License Type: Permanent License State: Active, In Use License Count: 287 / 287 (Active/In-use) License Priority: Medium
我们再配置文档中可能会看到通过“config ap max-count count” 命令来调整支持的最大AP数，但是，WLC实际是不支持该命令的。
这个问题可能和Data Externalization (DX) enabled by default有关系：
Maximum number of APs supported.................. 500
Supported APs when DX is enabled................. 250
If DX (data externalization) is enabled in 5508 WLC, the maximum number of APs that the WLC can support is capped at 250. This feature is introduced in 8.4 code.
Also, max supported count will only display the max supported count on WLC (e.g. 250, 500), not the current license in-use/count/adder, so this is expected:
Additionally, DX can be disabled by running below commands:
WLC> config dx disable
Note: A WLC reboot is needed after applying this command.
Other info:
config dx
To configure data externalization on a Cisco WLC, use the config dx command.
config dx {enable | disable}
Syntax Description
|
enable |
Enables data externalization on Cisco WLC. |
|
disable |
Disables data externalization on Cisco WLC. |
Command History
| Release | Modification |
|---|---|
|
8.4 |
This command was introduced. |
Usage Guidelines
If you have enabled data externalization on Cisco 5508 WLC, the maximum number of APs that the WLC can support is capped at 250.